roadie/RoadieLibrary/Extensions/ByteExt.cs

namespace Roadie.Library.Extensions
{
    public static class ByteExt
    {
        public static int ComputeHash(this byte[] data)
        {
            if (data == null || data.Length == 0)
            {
                return 0;
            }
            unchecked
            {
                const int p = 16777619;
                int hash = (int)2166136261;

                for (int i = 0; i < data.Length; i++)
                {
                    hash = (hash ^ data[i]) * p;
                }
                hash += hash << 13;
                hash ^= hash >> 7;
                hash += hash << 3;
                hash ^= hash >> 17;
                hash += hash << 5;
                return hash;
            }
        }
    }
}